Peter took one of his friends out to lunch. The lunches cost $100 plus he paid 12% in sales tax. If Peter left a 18% tip on the meal cost ($100), how
much did he pay in total, including sales tax and tip?

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected